Panel.AddAttributesToRender Method (HtmlTextWriter)
.NET Framework (current version)
Adds information about the background image, alignment, wrap, and direction to the list of attributes to render.
Assembly: System.Web (in System.Web.dll)
Parameters
- writer
-
Type:
System.Web.UI.HtmlTextWriter
An HtmlTextWriter that represents the output stream to render HTML content on the client.
| Exception | Condition |
|---|---|
| InvalidOperationException | The DefaultButton property of the Panel control must be the ID of a control of type IButtonControl. |
The AddAttributesToRender method is used primarily by control developers.
The following code example demonstrates how to override the AddAttributesToRender method in a custom server control so that the Panel text always displays as bold.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %> <%@ Page Language="C#" AutoEventWireup="True" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <title>Custom Panel - AddAttributesToRender - C# Example</title> </head> <body> <form id="Form1" method="post" runat="server"> <h3>Custom Panel - AddAttributesToRender - C# Example</h3> <aspSample:CustomPanelAddAttributesToRender id="Panel1" runat="server" BorderWidth="1px" BorderStyle="Solid"> <asp:Label id="Label1" runat="server">Label1</asp:Label> </aspSample:CustomPanelAddAttributesToRender> </form> </body> </html>
using System.Web; using System.Security.Permissions; namespace Samples.AspNet.CS.Controls { [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class CustomPanelAddAttributesToRender : System.Web.UI.WebControls.Panel { protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer) { // Show the Panel text as Bold writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight, "bold"); // Call the Base's AddAttributesToRender method. base.AddAttributesToRender(writer); } } }
.NET Framework
Available since 1.1
Available since 1.1
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